Stumbled upon this while debugging something else.
If we add search domain to our system configuration for
network DNS, then search domains work:
```
ping server1 ~
PING server1.my.domain (10.123.3.1): 56 data bytes
64 bytes from 10.123.3.1
```
This folder contains stuff that interfaces with the base operating system
like Phy for network access and the various OS-specific Ethernet tap
drivers.